Patent classifications
A
HUMAN NECESSITIES
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A47
FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
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A47C
CHAIRS; SOFAS; BEDS
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9/00
Stools for specified purposes
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A47C9/002
with exercising means or having special therapeutic or ergonomic effects
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A47C9/005
with forwardly inclined seat, e.g. with a knee-support
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